#include "Protocol.hpp"
#include <iostream>

class Cal
{
public:
    Response Execute(Request &req)
    {
        Response resp(0, 0);
        switch (req.Oper())
        {
            case '+':
                resp.SetResult(req.X() + req.Y());
                break;
            case '-':
                resp.SetResult(req.X() - req.Y());
                break;
            case '*':
                resp.SetResult(req.X() * req.Y());
                break;
            case '/':
                {
                    if(req.Y() == 0)
                    {
                        resp.SetCode(1);//除0错误
                    }
                    else
                    {
                        resp.SetResult(req.X() / req.Y());
                    }
                }
                break;
            case '%':
                {
                    if(req.Y() == 0)
                    {
                        resp.SetCode(2);//mod 0 错误
                    }
                    else
                    {
                        resp.SetResult(req.X() / req.Y());
                    }
                }
                break;
            default:
                resp.SetCode(3);//非法错误
                break;
        }
        return resp;
    }
};